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Bis(2,2′-bipyridine-κ2N,N′)(oxalato-κ2O,O′)zinc(II) pentahydrate

“…Polymeric chain structures dominate the solid-state chemistry of zinc(II) oxalate-containing species, as found for {Zn(C 2 O 4 )-L} n (L = 4,4 0 -bipyridine; Lu et al, 1999), {[Zn(C 2 O 4 )L]Á2H 2 O} n (L = ethylenediamine; van Albada et al, 2004), {[Zn(C 2 O 4 )-L 2 ]ÁH 2 O} n (L = pyridine; Ghosh et al, 2004) or {Zn 3 (C 2 O 4 )-L 4 } n (L = 4,4 0 -bipyridine; Hao et al, 2004). The crystal structures of mononuclear bipyridine-oxalate zinc(II) compounds are not known, although [Zn(C 2 O 4 )(2,2 0 -bpy)], [Zn-(C 2 O 4 )(4,4 0 -bpy) 1.5 ]ÁH 2 O and [Zn(C 2 O 4 )(2,4 0 -bpy) 2 ]Á2H 2 O, containing 2,2 0 -, 4,4 0 -and 2,4 0 -bipyridine, respectively, have been reported, but characterized by analytical and thermal techniques only (Czakis-Sulikowska et al, 2000).…”

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“…67 The first example of a nitrogen/sulfurligated zinc hydroxide complex was prepared. The complex, [Zn 2 (6) 2 (m-OH) 2 ][ClO 4 ] 2 , formed in the presence of KOH is relevant to the active forms of several zinc-containing metalloenzymes. The attempted synthesis in the absence of KOH leads to [Zn(6)(OClO 3 )]ClO 4 .…”

“…The influence of the nitrogen atom position in the bipyridine ligands was discussed. 6 The crystal structure for the co-ordination polymer [Zn(4,4A-bipy)(H 2 O) 3 (SO 4 )]•2H 2 O reveals a helix held together by 4,4A-bipy chains, and controlled mainly by hydrogen bonds. 7 Each of [Cd(4,4A-bipy) 2 (H 2 O) 2 ] n [pic] ] n framework respectively.…”

Interplay of thermochemistry and Structural Chemistry, the journal (volume 21, 2010) and the discipline

“…The zinc compound is a rare example of a salt containing complex anions and complex cations in which the same organic ligands and anions are in the inner coordination spheres. Consider now Zn(C 10 H 8 N 2 )(CHCl 2 COO) 2 (H 2 O) 2 [30]. Forgetting now the differences of Zn and Cd, do the three compounds in this paragraph compose a homologous series of hydrates with regards to nearly constant enthalpy of formation differences, cf.…”